EFFECT OF CONJOINT USE OF FYM AND LIME ON THE YIELD OF MAIZE (Zea mays L.) AND SOIL HEALTH IN AN ACID ALFISOL
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Date
2020-10-29
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CSKHPKV Palampur
Abstract
The present investigation was carried out to study the effect of conjoint use of FYM, lime
and fertilizers on the yield of maize (Zea mays L.) and soil health in an acid Alfisol at the
Research farm of the Department of Soil Science, CSK HPKV Palampur during kharif 2019. The
experiment was laid out in randomized block design with eleven treatments which were replicated
thrice. The soil of the experimental site was silt loam and classified taxonomically as Typic
Hapludalf. The grain and stover yield of maize were recorded. After the harvest of maize, soil
samples were taken from a depth of 0 - 0.15 m and analysed for various physical (bulk density
and water holding capacity), chemical (pH, OC, CEC, exchange acidity, exchangeable Al,
available N, P, K, Ca, Mg, S, Fe, Mn, Zn and Cu) and biological parameters (SMBC and SMBN)
of soil using standard methods of analysis. Grain and stover samples were also collected and
analyzed for nutrient contents to calculate the nutrient uptake by maize. Conjoint use of FYM and
lime along with recommended dose of fertilizers influenced the yield and nutrient uptake by
maize significantly over control and 100% NPK alone. Integrated application of 100% NPK + 10
t FYM/ha + lime incorporation @ 100% LR (Lime Requirement) recorded highest grain (36.48
q/ha) and stover (58.06 q/ha) yield which was at par with 100% NPK + 10 t FYM/ha + lime
incorporation @ 1/10th LR in furrow with grain and stover yield of 34.90 and 54.72 q/ha,
respectively, indicating thereby that dose of lime can be reduced to 1/10th of lime requirement by
furrow application, without significant reduction in yield. Combined application of FYM, lime
and fertilizers increased nutrient uptake significantly over 100% NPK. Combined application of
FYM, lime and recommended dose of fertilizers improved soil health in terms of physical (bulk
density and water holding capacity), chemical (pH, organic carbon, cation exchange capacity and
available nutrients) and biological properties (soil microbial biomass carbon and nitrogen).
Application of lime with recommended dose of NPK as well as integrated use of FYM, lime and
NPK fertilizers reduced exchangeable Al and exchange acidity significantly over control